Thermochronologic Evidence Linking the Adirondack and Connecticut Valley Regions of Post-Early Cretaceous Unroofing

连接阿迪朗达克和康涅狄格河谷地区早白垩世后屋顶剥落的热年代学证据

• 批准号: 9909210
• 负责人: Mary Roden-Tice
• 金额: $ 8.26万
• 依托单位: SUNY College at Plattsburgh
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9909210&HistoricalAwards=false
• 关键词: Thermochronologic; Evidence; Linking; Adirondack; Connecticut

9909210Roden-TiceAfter extensive episodes of compressional faulting during orogenesis it is not uncommon for a region to undergo a period of relaxation and regional extension, accompanied by differential uplift and erosion. However, the timing of these events relative to compressional phases and the relationship of uplift to preexisting faults is unclear. This project will examine the uplift, erosion and post-orogenic reactivation faulting in a portion of the New England Appalachians where preliminary data has indicated Cretaceous uplift and erosion with a suggestion that differential uplift is spatially associated with older, compressional faults. Results are expected to clarify the pattern of post-orogenic uplift and erosion and may provide insight into the general processers of regional tectonic transition from compressional to extensional environments.

在造山过程中经历了广泛的挤压断层作用后，一个地区经历一段松弛和区域伸展时期，伴随着差异抬升和侵蚀，这并不少见。然而，这些事件相对于挤压阶段的时间安排以及隆起与先前存在的断层的关系尚不清楚。该项目将研究新英格兰阿巴拉契亚山脉部分地区的隆起、侵蚀和造山后再活动断层作用，初步数据表明，白垩纪的隆起和剥蚀表明差异隆起在空间上与较老的挤压断层有关。这些结果有望阐明造山后的抬升和侵蚀模式，并可能为区域构造从挤压环境向伸展环境过渡的一般过程提供洞察。